[root@backup soft]# netstat -tupln | grep 5432
tcp        0      0 0.0.0.0:5432                0.0.0.0:*                   LISTEN      27533/postmaster
tcp        0      0 :::5432                     :::*                        LISTEN      27533/postmaster

psql -d openerp -U openerp -W
Password for user openerp:
psql: FATAL:  Ident authentication failed for user "openerp"

[options]
; This is the password that allows database operations:
; admin_passwd = admin
db_host = localhost
db_port = 5432
db_user = openerp
db_password = *********

local   all         all                               ident
host    all             all     127.0.0.1/32            ident
host    all         all         192.168.7.4/32          ident

sudo su - postgres

ALTER USER openerp WITH PASSWORD '<fill with wathever password you want>';

python openerp-server -r <db_user> -w <password_db_user>